Heating-tank for incubators.



HEATING TANK FOR INOUBATORS.

APPLIOATION FILED sum, 1909.

973,681; I Patented Oct; 25,1910.

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P. J. MoGABE.

HEATING TANK FOB INGUBATORS.

APPLLOA'IION rrLmi JAN. 6, 1909. i 973,681 Patented 0ct.25,1910.

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PATRICK J. MGCABE, OF MADISON LAKE, MINNESOTA.

HEATING-TANK FOR INCUBATORS.

Original application filed July 3, 1908, Serial No. 441,817.

Specification of Letters Patent.

Patented Oct. 25, 1910.

Divided and this application filed January 6,

1909. Serial No. 470,992.

To all whom it may concern:

Be it known that I, PATRICK J. MOCABE, a citizen of the United States,residing at Madison Lake, in the county of Blue Earth and State ofMinnesota, have invented new and useful Improvements in Heating Tanksfor Incubators, of which the following is a specification.

This invention relates to heating tanks, more particularly to that kindused for heating incubators as disclosed in my copending application forpatent, Serial Number 441,817, filed July 3, 1908.

The purpose of the present invention is to provide a heating tank ofsuch structure that it is adapted to fit entirely Within the incubator,and having an intermediate chamber or passage-way through the lengththereof, and through which the heat passes, thereby obtaining moreeffective and uniform heating of the water within the tank,

thus keeping the hatching chambers at a more uniform and effectivetemperature.

A further purposeof the invention is to provide the heating-tank withmeans whereby the heated air is, in circulating, passed over an exposedfilm of water, for the purposes and with the results hereinafter setforth.

A further purpose of this invention is to provide an automatic heatregulator which, without the use of a thermostat, or other artificialdevice, but by means of the air pressure only, will regulate thetemperature within'the incubator.

With these as the essentials, my invention embodies other advantagesthat will appear in the course of the following detailed description,and set forth in the claims.

In the accompan ing drawings illustrating the invention: *igure 1 is ahorizontal sectional View of my improved tank shown applied to anincubator; Fig. 2 is a transverse sectional view of the tank shown 1nFig. 1, taken 011 the line ab,' and Fig. 2 is a similar View taken onthe line ww of Fig. 1. Fig. 3 is a horizontal sectional view of themodified form of tank. Fig. 4 is a transverse view of the tank shown inFig. 3 taken on the line w-a2,' and Fig. 5 is an end elevation of thetank partly shown in section along the line g g of Fig. 3.

' Referring more in detail to the several views wherein like charactersof reference designate corresponding parts in the difincubator.

. lower wall thereof.

ferent figures shown, the tank A comprises a rectangular metallic vesseladapted to be placed substantially wholly within an in cubator B.Throughout the length of the tank A there is a passageway 1communicating at one end with the heating means and at the other endwith the interior of the The former of said communica tions, designated4, has a downwardly flaring opening whereby the heated air from the lampG may be gathered and directed into the heating passage-way 1. Saidpassage-way divides the water tank A into a plurality of communicatingchambers 2, 6 and 6. The water-chamber 2 is within the lower portionofthe tank and extends substantially throughout the surface of the Thewater-chamber 6 is that portion of the tank immediately over the flaredopening 4, and projects beyond the outer wall of the incubator B. The

chamber 6 is narrower than the chamber 2 .but wider than the passage-way1 at its flared end 4, thus forming spaces on each Eside of saidpassage-way which connect said chambers 2 and 6 and enable the water inthe tank to circulate freely therethrough.

The water-chambers 2 and 6. communicate with the water-chamber 6 bymeans of a pipe or. inclosed water passage 7, which passage extendsthroughout the length of the heating chamber 1, for the purpose ofgiving a greater surface to the action of the heat within said chamber1.

That portion of the tank A within the walls of the incubator B isprovided with an upstanding ledge 5 that extends entirely around theside edges of the inclosed upper ;wall. provide a chamber 3 adapted toreceive a thin film of Water, the function of which The purpose of thisprovision is to will be presently described.

The inclosed water-chambers of the tank A are filled by means of thepipe 18 that communicates with the lower chamber 2 and is ofsuificient'height to extend outside of the incubator, whereby the tankmay be filled without in any way interfering with within the tank I havedevised a means I whereby this is readily accomplished. The 2 meanscomprising a balancing bar or rod 9, I

to overhang an outlet 12 that delivers the 5 heat into the incubatorfrom the chamber 1, and at its opposite end the rod 9 supports a valve13 by means of a link 14, said valve seating against the underside ofthe opening 15. The proper regulation of the plate 11 and valve 13 iseffected by a movable weight 10 upon the rod 9. The valve supporting rod9 is steadied in its operation by means of upstanding guide-wires 8. Innormal position the plate 11 and the valve 13 are adapted to besubstantially as that shown in Fig. 1, wherein the plate 11 closelyoverhangs the opening 12 and the inlet 15 is closed.

hen the incubator is in operation the heat from the lamp G, passingthrough the passage-way 1, enters into the interior of the incubator byway of the outlet 12, as stated. Now, if for any reason should the heatbe come excessive the additional outflow acting against the plate 11would force the same upward, thus permitting the valve 13 to drop;whereupon cold air from the operating room would enter the passage-Way 1by way of the inlet passage-way 15, and reduce the temperature of theair in the passageway 1 until the plate 11 and the valve 13 assumedtheir normal positions. After the products of combustion have passedthrough the passage-way 1 and heated the water within the inclosedportion of the tank and within the water-passage 7, the heated airenters the air spaces in the casing of the incubator, makes twocirculations, and finally escapes through the vent 15 on top of theincubator into the operating room, in the manner described in my patentfor incubators, dated June 29, 1909, No. 926,434. To moisten orcondition this heated air before it is diffused in the incubatoroperating room, I subject the same to the action of the exposed film ofwater 5. Then this moistened air, passing into the operating room,returns by way of the ventilator 16 into the egg chamber. The purpose ofthis construction is to keep the air in the room in which the incubatoris being operated as fresh as the air out of doors. Each egg has enoughnatural moisture in itself to hatch well if it does not come in contactwith dry air, which is certain to take from the egg some of its naturalsupply of moisture. Another advantage of this construction is that thebottom of my heating tank is of the same temperature over its entirearea, owing to the opposite directions of the returning water and theoutgoing air.

To the underside of the tank there is pro vided an air conducting pipe16 that communicates with the atmosphere in the oper ating room, andwhich is provided with perforations 17, through which said air isconducted into the several hatching chambers, C, D, E and F.

In the modified form of tank shown in Fig. 3, the construction issubstantially that shown in Fig. 1, excepting that instead of having theexposed film of water on the upper wall of the tank I have means forholding the same within the passage-way 1, which means comprises a ledgeor plate 23, welded or otherwise secured to the bottom of saidpassage-way adjacent to the opening 4; and there is a further advantagethat instead of having an inclosed passage-way for conducting the waterthrough the length of the chamber 1 I form a separate wall, whichdivides the tank into an upper and lower waterchamber, designated 21 and22 respectively. The inclosed water-chambers are adapted to be filled bymeans of the pipe 19, and the chamber for holding the exposed film ofwater by the pipe 20, both of said pipes communicating with the outsideof the incubator. In this type of structure the heat, in passing throughthe passage-way 1, is subjected to the exposed water and 1s thusmoistened or conditioned before entering the interior of the incubatorchamber.

If desired, the film of exposed water may be carried upon the top of thetank, as illustrated in Fig. 1, without departing from the spirit of myinvention.

In both of the structures shown, the operation of thus treating thewater is equally effective, but by reason of the simplicity of structureof the tank in the former instance I prefer and have shown that kind.There may, of course, be other types of tanks for effecting this sameresult, and I therefore do not wish to be understood to limit myself tothe precise details disclosed, but rather reserve, instead, the right tomake such changes as will better adaptthe inven tion to its purposes,and in doing so limit myself only to the prior art to which thisinvention pertains.

I claim:

1. A hot water heater comprising a tank provided with a horizontalpassageway therethrough having a downwardly turned mouth at one endopening on the under side to receive heated air and an opening on itsupper side near each end, said passageway being as wide as the tank forthe greater part of its length, but narrower than said tank at the monthend, and automatic valves as wide as the tank for the greater part ofits length, but narrower than said tank at its mouth end to providewater communication between the front end of said tank and the portionbelow the heating passageway, and a water circulating tube extendingthrough said heating passageway connecting the front to the rear of saidtank.

3. A hot water heater comprising a horizontal tank divided by ahorizontal diaphragm into an upper and lower section, the upper sectionserving as a passage for hot air and opening at the bottom of the tankto receive heated air, the lower portion of said azzsr tank adapted tohold water and having a forward and a rear water section incommunication therewith, and a circulating tube- PATRICK J. MOCABE.

WVitnesses F. B. KNoFF, Gno. T. SWEARINGEN.

CQLPY

